chore: don't pin core actions

Author: stipsan

.github/workflows/prettier.yml

@@ -15,13 +15,13 @@ jobs:
     name: 🤔
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3
-      - uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
           cache: npm
           node-version: lts/*
       - run: npm ci --ignore-scripts --only-dev
-      - uses: actions/cache@6998d139ddd3e68c71e9e398d8e40b71a2f39812 # v3
+      - uses: actions/cache@v3
         with:
           path: node_modules/.cache/prettier/.prettier-cache
           key: prettier-${{ hashFiles('package-lock.json') }}-${{ hashFiles('.gitignore') }}